Alarm for cash-boxes.



W. 1:. DAWSON & R. McALPINE.

ALARM FOR: CASH BOXES. APPLICATION FILED SEPT.'11, 1908.

1,002,232 Patented Sept. 5,1911.

BOTH 0F DETROIT, M CHIGAN.

' ALARM-Eon sass-Boxes. it

Applicationfiled September '11, 1908; se ial-no. 452,623.

.Michigan, have invented certain new and useful Improvements in Alarmsfor Cash- Boxes,.of which the following is a specification, referencebeing had therein ,to the accompanying drawings.

- The invention relates to'alarms for cash boxes and ismorekparticularly designed for use in 'COIIDQCtlODWltll telephoneinstrumentsatpay stations. 1

[It is usual to provide telephone instruments, at pay stations with acash box con-.-

nected therewith intow'hich the toll for the use ofthe instrument isplaced by the user.

forded for the robbing of the box by the thief in comparativeconcealment.

As the instruments arefrequently placed i-nslde of a cabinet or boothopportunity is af- At other j-i f;stations the instrument is placed on adesk or counter but is usually provided with a cord, connection whichforms the sole means of attachment. Itis therefore only necessaryfor-the thief to pickthe cord and to then carry the instrument ofibodily-wash box and all.

vIt is the object of the present invention to provide an effective guardoralarm which 'peculiar construction,

will immediately indicate any unlawful tam-I perin with the instrument.

To this end the invention consists in the peculiar construction andarrangement of an electric alarm guarding the cash drawer of theinstrument, and further in the means by which the cutting of the circuitor the detachment of the instrument'will also sound the alarm.

The invention still further consists in the arrangement combination ofparts as hereinafter set forth.

I'nthe drawingsFigure 1 is an elevation-jof the telephone instrument andcash box indicating diagrammatically the alarm cincuits; Fig. 2 is aperspective view of the o operated by both clrcuits, and by a distinctbattery Q; It is therefore apparent that the bolt for the cash drawerwith the circuit closer for the alarm in 0 erat-ive connect-iontherewith. Fig. 3 is a diagram illustrating a modified arrangement ofthe electric cir- A is: the telephones instriunent which is and drawer Cguarded by the lock D This lock,

as shown in Fig. 2, comprises aboltE which,

WILLIAM E. Diwm m .0mm: inmate:tin, or person-MIC IGAN, assrenons on,

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spec'ificationof Letters Batent. Sept. -5,1911 .1

when projected, extends adjacent to a flange forms a keeper for the boltand prevents the opening of the drawer. i Adjacentto the bolt E isarranged a. ciron theinside of'the cash box which flange cuit closer Gr.This preferablyconsis'ts of a which isoperated by the bolt E through theclosing or opening of an electric, circuit. "I preferably employ a.doubleguard' circuit normally closed. Thus, as shown,.the 11lovablecontact His held when the bolt E is closes one electriccircu-it, whilein the same position the movable contact His separated from asecondcooperating contact H 'Thus the withdrawal of the bolt E will cause thesounding of the alarm through the other will still be .efiective.

chanical :connection between the. instrument and the line. lVith' such aconstruction the circuit inoperative, will nevertheless sound the alarmby the opening of the normally closed circuit. As illustrated, thenormally closed circuit K includes a relay or electromagneticallycontrolled circuit closer L which controls a local circuit M, includingthe battery N and alarm bell O. The normally open circuit P alsocontrols an alarm bell and, as indicated, the same bell 0 1s devicecannot become inoperative through the failure of either of the batteriesN or Q, as in the former case the relay L willbe operated. to close thecircuit M, which whereby a second electric circuit is opened- Asillustrated in Fig. 1, thetelephone strument is providedwith a cordconnection J, which forms both the electrical and me plurality ofcooperating contacts l-L'one'of I y medium of an insulator pin or blockI. The arrangement issuch that; the retractingof. the bolt will causethe circu t closer tose't in operation the alarmeither throughthe underthe control of the circuit closer G, one circuit being normally open andthe other I projected against the contact ,H' ;which agencyof either orboth of these electric circuits, and if one is rendered inoperativethe.90 conductors of the alarm circuit are. also passed through the cord J.Thus thesever ing of this cord J, while rendering thegopen,

will operate the bell O, and in the latter case this bell will beoperated by the closing of the circuit P from the battery Q.

" it is obvious that the alarm may also be ap-. 'plied' to instrumentssecured in fixed positions, and that with either construction theAlthough wehave illustrated an instru- 'IH'EIIH-H-WhiCh the electric andmechanical connections are formed through the cord J,

alarm will be sounded both upon the tampering with the drawer and by thesevering of the electric connections. Moreover, in each case, theelectric conductors of the alarm circuit may be indistinguishably.associated with the regular electric connections for the telephoneinstrument so that it is impossible to prevent-the sounding of the alarmby first cutting or-otherwise rendering the alarmcircuit inoperative.This is particularly true in cases where the cord connection, theseveral conductors of the telephone and alarm circuits are so inter-.said instrument having its circuit indis- 'tmguishably .nections of.said instrument.

twined as to be indistinguishable.

In Fig. 3 a modified arrangement of the electric circuits isillustrated, in which Q is' a battery for the normally open circuit Pand Q is a battery forthe normally closed circuit K. The bell O ispermanently connected into the circuit K, but the contacts H and H closea shunt in this circuit whenw ever thebolt E is projected therebyprevent-i ing the operation of the bell OR When this shunt is open thebell 0 will be set in operation and at the same time the closingof'thecircuit P will set into operation a second bell O.

' .What we claim as our invention is:

A -1, The combination with a telephone instrument and a flexible cordfor mechanically and electrically connecting said instrument to itsstation, of an electric alarm having a portioniof its circuit passingthrough said cord'and operated upon the severance o1"- detachment ofsaid cord.

'2. The combination with a telephone instrument, of anelectric alarm forguarding associated with the electric con- I 3. The combination with atelephone instrument and a flexible cord for mechanically andelectrically connecting said instru:

ment to its station, of a cash box for said instrument, a lock for saidcash box, an electric alarm operatively connected to said .lock having aportion of its circuit passing through sald cord, and means foroperating said alarm upon the unlocking of said lock or the severance ofthe'cord. Y

4. The combination with a telephone instrument and a flexible cord formechanically and electrically connecting said instrument to its station,of a cash box for said instrument, a lock for said box, an armconnecting the cash box to the instrument, an electric alarm operativelyconnected to said lock, having a portion of its circuit passing throughthe cord and said arm, and

means for operating the alarm upon the un-,

locking of the lock or the severance of the cord.

5. The combination with a telephone instrument and its electricalconnections, of a cash box connected to said instrument, a lock for saidbox, an alarm operatively connected with said lock having its circuitindistinguishably associated with the electrical .connectionsof theinstrument, and means for operating said alarm 'upon. the unlockin'gofsaid lock or the detachment "of said instrument.

6. The combination with. a telephone instrument. and a flexible cordforming the mechanical and electrical connections between the instrumentand its station, of an electric alarm having a portion of its cir- =cuitpassing through, said cord whereby

